Guiding trough for optical fibers



FIG. 1 is a left side, top and front perspective view of a guiding trough for optical fibers showing my new design;

FIG. 2 is a front elevational view thereof, the rear elevational view thereof being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof, the left side elevational view thereof being a mirror image; 

The ornamental design for a guiding trough for optical fibers, as shown and described. 